DetachmentSystemTest {
  testRespondsToDetachFailing() {
    detachment_system = DetachmentSystem.new(parachute = mock(Parachute))
    parachute.stubs().detach().to_raise(AnyException)

    this_block {
      detachment_system.handle_acceleration_report(-50.ms2)
    }.should raise(AnyException)
  }
}